﻿using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;

namespace EyFramework.Common
{
    /// <summary>
    /// AES加解密工具
    /// </summary>
    public static class AESHelper
    {
        /// <summary>
        /// AES加密(无向量)
        /// </summary>
        /// <param name="plainBytes">被加密的明文</param>
        /// <param name="key">密钥</param>
        /// <returns>密文</returns>
        public static string AESEncrypt(String Data, String key)
        {
            Byte[] keyArray = System.Text.Encoding.UTF8.GetBytes(key);
            Byte[] toEncryptArray = System.Text.Encoding.UTF8.GetBytes(Data);
            var rijndael = new System.Security.Cryptography.RijndaelManaged();
            rijndael.Key = keyArray;
            rijndael.Mode = System.Security.Cryptography.CipherMode.ECB;
            rijndael.Padding = System.Security.Cryptography.PaddingMode.PKCS7;
            System.Security.Cryptography.ICryptoTransform cTransform = rijndael.CreateEncryptor();
            Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
            return Convert.ToBase64String(resultArray, 0, resultArray.Length);
        }

        /// <summary>
        /// AES解密(无向量)
        /// </summary>
        /// <param name="encryptedBytes">被加密的明文</param>
        /// <param name="key">密钥</param>
        /// <returns>明文</returns>
        public static string AESDecrypt(String Data, String key)
        {
            Byte[] keyArray = System.Text.Encoding.UTF8.GetBytes(key);
            Byte[] toEncryptArray = Convert.FromBase64String(Data);
            var rijndael = new System.Security.Cryptography.RijndaelManaged();
            rijndael.Key = keyArray;
            rijndael.Mode = System.Security.Cryptography.CipherMode.ECB;
            rijndael.Padding = System.Security.Cryptography.PaddingMode.PKCS7;
            System.Security.Cryptography.ICryptoTransform cTransform = rijndael.CreateDecryptor();
            Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
            return System.Text.Encoding.UTF8.GetString(resultArray);
        }
    }
}